diff --git a/Dockerfile b/Dockerfile
index 8e36aa9..4d230d8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,10 +7,17 @@ ENV VIRTUAL_ENV=/home/mediacms.io
 ENV PATH="$VIRTUAL_ENV/bin:$PATH"
 ENV PIP_NO_CACHE_DIR=1
 
+ARG DEVELOPMENT_MODE=no
+
 RUN mkdir -p /home/mediacms.io/mediacms/{logs} && cd /home/mediacms.io && python3 -m venv $VIRTUAL_ENV
 
 # Install dependencies:
 COPY requirements.txt .
+COPY requirements-dev.txt .
+
+RUN set -x \
+    && if [ "$DEVELOPMENT_MODE" = "yes" ]; then pip install -r requirements-dev.txt ; fi
+
 RUN pip install -r requirements.txt
 
 COPY . /home/mediacms.io/mediacms